| Business | Phone |
| Advance Manufacturing Co 8 Turnpike Industrial Rd, Westfield 1085 | (413) 568-2411 |
| Armstrong Tool 77 Mill St, Westfield 1085 | (413) 568-8800 |
| Berkshire Precision Grinding 70 Knollwood Dr, Westfield 1085 | (413) 568-7297 |
| Christopher Davis 77 Mill St, Westfield 1085 | (413) 562-3211 |
| Earlee Machine Inc 77 Mill St # 104, Westfield 1085 | (413) 564-8249 |
| Ev-Rite Tool 132 Elm St, Westfield 1085 | (413) 568-1433 |
| G & H Mfg 455 North Rd, Westfield 1085 | (413) 562-2035 |
| Hemco Tool & Die Inc 7 S Maple St, Westfield 1085 | (413) 568-7940 |
| Industrial Precision Corp 1014 Southampton Rd, Westfield 1085 | (413) 562-5161 |
| Jit Mfg 565 North Rd, Westfield 1085 | (413) 562-3853 |
| Manufacturing Technologies 6 Old Stage Rd # 3, Westfield 1085 | (413) 562-0562 |
| Millrite Machine Co 587 Southampton Rd, Westfield 1085 | (413) 562-9212 |
| Paragon Manufacturing Inc 121 Summit Lock Rd, Westfield 1085 | (413) 562-7202 |
| Peerless Precision Inc 66 Mainline Dr, Westfield 1085 | (413) 562-2359 |
| Performance Tool 41 Jefferson St, Westfield 1085 | (413) 568-6643 |
| Pfr Machine Co 41 Jefferson, Westfield 1085 | (413) 568-7603 |
| Pond Brook Machining 6 Old Stage Rd, Westfield 1085 | (413) 562-7411 |
| Pride Machining 337 N Elm St, Westfield 1085 | (413) 568-9884 |
| Quality Machining Co 96b1 Mainline Dr, Westfield 1085 | (413) 562-0389 |
| Roselli's Machine 248 Root Rd, Westfield 1085 | (413) 562-4317 |
| Westfield Tool & Die Inc 55 Arnold St, Westfield 1085 | (413) 562-2393 |
| Z & Z Tool Mfg 41 Jefferson St, Westfield 1085 | (413) 568-8085 |
| Vector Tool & Dye 317 Northwest Rd, Westfield 1085 | (413) 562-1616 |
| K & B Tool Inc 18 Coleman Ave, Westfield 1085 | (413) 568-3571 |
| K & R Machine Co 99 Springdale Rd, Westfield 1085 | (413) 568-9335 |